Following the release of iOS 5.1.1 earlier today, jailbreak developer MuscleNerd has informed jailbreakers to refrain from updating to iOS 5.1.1 until further notice. The iOS hacker specifically notes that iPhone 4S, iPad 2, or new iPad users should beware of the update.
MuscleNerd: iOS 5.1.1 is out…jailbreakers beware! Owners of iPhone4S or iPad2/3 should stay away from it!
We expect that the iPhone Dev-Team will soon release an updated version of redsn0w that recognizes iOS 5.1.1. The tethered jailbreak available for devices running iOS 5.1, excluding the iPhone 4S, iPad 2, and new iPad, still works with iOS 5.1.1. But for now, iPhone, iPod touch, and iPad users should not update if they are currently jailbroken or wish to jailbreak in the future.